Tuesday

January 24, 2017
Total # Posts: 336

**Chemistry**

A student determined the H of neutralization of nitric acid (HN03) mixed with NaOH solution, using the procedure described in this experiment. Fifty milliliters of 1.00M HN03 was added to 50.5 mL of 1.00M NaOH solution, and the following time-temperature data were recorded. A ...

*May 1, 2013*

**College Physics**

A uniform meter stick of mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance at a point 19.9 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale, the reading on the ...

*April 27, 2013*

**Calculus**

In a test run, a new train travels along a straight-line track. Data obtained from the speedometer indicate that the velocity of the train at any time t can be described by the velocity function v(t) = 8t (0 _< t _< 30) a. Find the position function of the train. b. Find...

*April 26, 2013*

**Calculus**

In a test run, a new train travels along a straight-line track. Data obtained from the speedometer indicate that the velocity of the train at any time t can be described by the velocity function v(t) = 8t (0 ¡Ü t ¡Ü 30) a. Find the position function of ...

*April 26, 2013*

**chemistry**

br ne s

*April 2, 2013*

**algebra1**

mr jones estimates his profit starting in 2006 will be given by the formula p=7t^2-14t+10 where t is number of years and p is the profit.if this formula is correct,when will mr.jones have a profit of more than $1000

*March 28, 2013*

**physics**

After 35 minutes of running, at the 8-{\rm km} point in a 9-{\rm km} race, you find yourself 200m behind the leader and moving at the same speed. What should your acceleration be if you are to catch up by the finish line? Assume that the leader maintains a constant speed ...

*March 20, 2013*

**english**

are there any figurative language in the book Witch hunt the mysteries of salem?

*March 2, 2013*

**math**

the first term of a linear sequence is 5,nd d common difference is -3 find the 15 term

*February 24, 2013*

**Math**

If 2 cups of rice requires 4.5 cups of water, what is the total number of cups of water needed to prepare 5 cups of the same rice?

*December 13, 2012*

**algebra**

the area of a square is 8 meters. which of these is closest to the length of one side of the square

*November 20, 2012*

**science**

a toy car is traveling .5 meters per second.It goes 3.5 seconds. how far did it travel.

*November 20, 2012*

**7th grade math Ms. Sue please**

A tip: To find the percent of a number, do percent times the number divided by 100 and you will get your answer. Example: Find 5% of 80. 5*80=400 Now do 400 divided by 100. 400 divided by 100 is 4. So 5% of 80 is 4 :)

*November 16, 2012*

**Math**

12/42=4w/14

*November 11, 2012*

**trigonometry**

Dwight Howard is playing center for the Los Angeles Lakers. During the game, he blocks a shot. When Howard blocks the ball, he is 12 feet off of the ground (including his height). The ball is hit down at an angle of depression of 63°. Find the distance that the ball ...

*October 18, 2012*

**physical sicence**

if a gives a force 2kg object an acceleration 1.6,/s2 what does the smae force give to an object of 4kg

*October 12, 2012*

**anatomy/physiology I**

In physiology, it's all about the function of cell and tissue and you need a good background in histology to reason properly. Skin is the best example. If you know what type of cell all the layers are made of it's easy to figure out some dermatology pathologies.

*October 8, 2012*

**anatomy/physiology I**

Not really, its more for histology. But between the two, its more important for the physiology component.

*October 8, 2012*

**math**

8+2y-3+9y

*October 3, 2012*

**physics**

a) 9.8 * .36 = max a b) 9.8 * .16 = relative a a) Reasoning. Friction prevents sliding and the only acceleration it has thus far is gravity. b) Reasoning. K friction is used when the vehicle is moving, which in b, it is

*September 29, 2012*

**geometry**

[1.04] If B is between A and C, AB=8x, BC=3x and AC=33, what is the value of AB?

*September 11, 2012*

**math**

For real I think everyone is, I am also😂

*September 6, 2012*

**chemistry**

Zinc reacts with hydrochloric acid according to the reaction equation Zn(s)+2HCL(aq)=>ZnCl2(aq)+H2(g). How many mm of 1.50M HCL(aq) are required to react with 9.05 g of ZN?

*August 9, 2012*

**Theory and reserch in child development**

During the middle of the twentieth century, North America psychology was dominated by

*May 31, 2012*

**chemistry**

if 250ml of nitrogen dioxide were collected over mercury at 72 degrees celsious and under pressure 675mm of mercury, how many grams of nickel reacted?

*May 31, 2012*

**Algebra 2**

Write a recursive formula for the sequence 15, 26, 48, 92, 180, ... Then find the next term.

*May 17, 2012*

**Algebra 2**

Find the arithmetic mean a n-1=3.9, a n+1=7.1

*May 17, 2012*

**Algebra**

find the arithmetic mean A_n-1_-3.9, A_n+1_=7.1

*May 17, 2012*

**Physics**

A cylindrical tank has a tight-fitting piston that allows the volume of the tank to be changed. The tank originally contains 0.140 m3 of air at a pressure of 3.20 atm. The piston is slowly pulled out until the volume of the gas is increased to 0.440 m3. If the temperature ...

*April 17, 2012*

**3 grade math ms sue**

3,5,3,5 2,5,2,5

*March 8, 2012*

**physics**

yes. you conclude that original asteroid had a similar composition.

*February 29, 2012*

**physics**

Radiometric

*February 29, 2012*

**Accounting**

Give an example where product and period costs are the same and a separate example where they are different.

*February 19, 2012*

**statistics**

PROBLEM 4: PREFERENCE FOR CAN (a) What is the probability of preferring a glass bottle? b) What is the probability of preferring a glass bottle given that one lives in Region A? c) What is the probability of preferring a can given that one lives in Region C or B? Region A ...

*February 16, 2012*

**algebra**

Hong goes running Monday, Wednesday, and Friday of each week. Each Monday he runs miles, each Wednesday he runs miles, and each Friday he runs miles. How many total miles does he run in weeks?

*February 11, 2012*

**program planning and evaluation**

please answer the question above

*January 29, 2012*

**math**

What is the value of |-3-10|? -13, -7, 7 or 13

*January 24, 2012*

**chemistry**

What are the materials used to create a free standing atomic model of iodine?

*January 3, 2012*

**physics**

1. A ball moving horizontally clears a net 2 meters high. What maximum speed can it have if it is to fall within 5 meters of the net? 2.A pulley system lifts a load of 800 Newtons, 20 centimeters while the rope pulling it moves 100 cm. a. How much force must be applied to lift...

*October 18, 2011*

**physics**

A small steel ball rolls off a table (1 meter high) with a speed of 2 m/s. Where should they place a can (15 cm high; diameter 10 cm) to catch the ball?

*October 18, 2011*

**physics**

1. A jet is flying with an air speed of 500 m/s. A parcel is dropped out of the plane. Assume that it takes 40 seconds for the parcel to hit the ground.. Assume no air resistance. a. How high is the jet? b. How far forward horizontally from the spot where it leaves the jet, ...

*October 18, 2011*

**physics**

1. A jet is flying with an air speed of 500 m/s. A parcel is dropped out of the plane. Assume that it takes 40 seconds for the parcel to hit the ground.. Assume no air resistance. a. How high is the jet? b. How far forward horizontally from the spot where it leaves the jet, ...

*October 18, 2011*

**chem**

How many moles of chloroethylene contain 5.47X10^26 molecules

*October 1, 2011*

**math**

A man agrees to pay $450 per month for 48 months to pay off a car loan. If interest of is charged at 12% compounded monthly, how much did the car originally cost?

*September 12, 2011*

**Reading**

For this question,i think her mother's words inspire her daughter.That's my explaination£¬hope it will help u.

*June 16, 2011*

**Chemistry**

The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 9.50 of silver by 10.5?

*June 7, 2011*

**calculus**

Use the demoivre's theorem to find the answer? (1+i)^8

*May 20, 2011*

**calculus**

write it in the form of a+ib (1+i)^2 (1-i)^3

*May 18, 2011*

**physics**

Consider the system shown in the figure below with m1 = 30.0 kg, m2 = 13.7 kg, R = 0.110 m, and the mass of the pulley M = 5.00 kg. Object m2 is resting on the floor, and object m1 is 4.60 m above the floor when it is released from rest. The pulley axis is frictionless. The ...

*May 14, 2011*

**Math**

Find the product. (5a+2)³

*May 3, 2011*

**Math**

Mutliply. (9t² - t- 7)(4t²+9t-1) AND Find the product. (5a+2)³

*May 3, 2011*

**Math**

Find the product. (5a+2)³

*May 3, 2011*

**Math**

Multiply. (9t²t-7)(4t²+9t-1)

*May 3, 2011*

**physics - i need A.S.A.P**

An object of mass 1.5 kg is placed on a rough horizontal surface, as shown in Figure 1. Force F acts on the object. When the magnitude of F is 10 N, the object just begins to slide. Determine the coefficient of static friction between the object and the surface. i do not know ...

*May 2, 2011*

**math**

240 feet of fencing material is going to be used. What should the dimensions be to produce a maximum enclosed area.

*April 28, 2011*

**Math**

12 congruent individual plots 8ydx7=56yd 18ydx3=54yd 56yd+54yd=110yd Total length: 110yd -------------------------------- 6 congruent congruent rectangles 4ydx2=8yd 3ydx2=6yd 8ydx4=32yd 6ydx3=18yd 18ydx3=54yd 32yd+54yd=86yd Total length: 86yd

*April 20, 2011*

**physics**

what is cross product or vector product plz explain it in detail.....

*April 18, 2011*

**information systems**

how can we say that a data should be relevant and verifiable?

*April 17, 2011*

**fizik**

b) A ball of mass 3.5 kg starts from rest and slides down a rough inclined plane 60 cm long in 0.6 s. i) Calculate the net force acting on the object along the inclined plane

*April 11, 2011*

**algebra**

Shelly has $175 to shop for jeans and sweaters, Each pair of jeans costs $25, each sweater costs $20, and she buys 8 items. Determine the number of pairs of jeans and sweaters Shelly bought.

*March 30, 2011*

**Math**

Thank you.

*March 21, 2011*

**Math**

Do I add them together, have the answer and then divide by 7 ?

*March 21, 2011*

**Math**

A student earned scores of 85, 83, 90, 94, 88 and 84 on the first six tests in a biology class. What score is needed on the seventh test to produce an 86 average?

*March 21, 2011*

**Math**

Paul gets a bill from the sign rental company for $73.03. Their original quote was $9.84 per day for the sign, plus $13.99 for delivery/pick up. For how many days rental was Paul billed?

*March 21, 2011*

**algebra**

Solve using the quadratic formula and leave the answer in radical form: y^2+6y-1=0

*March 10, 2011*

**algebra**

Given a quadratic equation in the form y = ax2 +bx +c , and four choices of graphs representing that equation, how can you tell which choices could be eliminated right away by looking at the equation and looking at the graphs and doing some minimal calculations and not ...

*March 4, 2011*

**algebra**

simplify: ã(x^2+2x+1)

*March 2, 2011*

**algebra**

solve for x: X+4 = ∜(x+1)

*March 2, 2011*

**algebra**

simplify: ã(x^2+2x+1)

*March 2, 2011*

**helth**

i am in the 5th grade and need to know the function of heart and how to draw it

*February 26, 2011*

**trig/precalc**

a plane flies 810 miles form Franklin to Centerville with a bearing of 75 degrees (clockwise from north). then it flies 648 miles from centerville to rosemont with a bearing of 32 degrees. find the straight-line distance and bearing from rosemont to franklin.

*January 20, 2011*

**geometry**

Find JL if JK=17-x, KL=2x-7, and K is the midpoint of JL

*January 20, 2011*

**english**

complete the story on the basis of the beginning given below in at least 300 words. Anshuman felt a severe pain in the left part of his chest. He was seating on the terrace right then, and being overweight he struggled to reach his room to make a call to his brother...

*January 16, 2011*

**microeconomics**

Assume you read in a newspaper that firms who produce baby milk are not doing well due to melamine case. With the theory of perfect competition in mind, what do you expect to happen to the baby milk prices? Will the firms able to make profits in long run?

*January 6, 2011*

**microeconomics**

“Competitive firms do not want to produce its goods even after an increasing marginal product has set in and the marginal cost is decreasing”. Do you agree?

*January 6, 2011*

**math**

40=40 and 16=10 and6

*December 9, 2010*

**science**

thanks!

*December 3, 2010*

**science**

is the sun dynamic in changing, unchanging, inactive, or perfectly homogeneous? I am so confused!!!! I need it for my poster!

*December 3, 2010*

**Phy. Science**

What is the state of matter when non-convective rain leaves the cloud?

*December 1, 2010*

**ethics**

how do most us manufacturers monitor their factories for compliance with corporate code of conduct

*November 30, 2010*

**math**

solve 2│2x-7│+11=25

*November 22, 2010*

**physics**

An amount of work equal to 3.5 J is required to compress the spring in a marble gun. If all energy is conserved, how much kinetic energy does a 25 gram marble have when it leaves the spring?

*November 14, 2010*

**french**

kindly make 7 sentences with the verb ".HABITER". THANKS.....IAM A 4TH GRADE STUDENT.

*October 15, 2010*

**math**

22+22+23+25+25+26+26+26+39 divided by9=234/9==26....ans =26

*October 15, 2010*

**3rd grade math**

46-12=34

*October 14, 2010*

**math/2nd grade**

out of 40 crayons in two boxes,one box has 8 more crayons than the other.

*October 13, 2010*

**managerial finance**

12.5%

*October 10, 2010*

**physics**

okay i got it thank you so much i had my signs all wrong thank you again!

*October 6, 2010*

**physics**

it's still wrong :( i've tried my way and your way and it's still wrong

*October 6, 2010*

**physics**

well since there's an x component of the gravity wouldn't that affect the force of friction? For my force i got (0 = theta) mgsin0 - (mu)mgcos0 is that wrong?

*October 6, 2010*

**physics**

Well so to convert k constant to N/m would it be 22 N/m instead of 2.2 N/cm?

*October 6, 2010*

**physics**

A spring with a spring-constant 2.2 N/cm is compressed 28 cm and released. The 4 kg mass skids down the frictional incline of heigh 43 cm and inclined at a 22 degrees angle (g = 9.8 m/s^2) The path is frictionless except for a distance of 0.9 m along the incline which has a ...

*October 6, 2010*

**4th grade**

two eqtns....X+12=Y;AND X+Y=40......fromX+12=y thenX+X+12=40;2X+12=40 THEREFORE X=14....IF X=14 AND X+Y=40,THEN Y=26ANS...26DOLLARS FOR SWEATER.

*September 27, 2010*

**algebra**

the function H described by H (x) -2.75x+71.48 can be used to predict the height in centimeters of a women whose humerus is z cm long predict the height of the womens humerus is 32 cm long

*September 7, 2010*

**physics**

A dart gun is fired while being held horizontally at a height of 1.38m above ground level, and at rest relative to the ground. The dart from the fun travels a horizontal distance of 7.76. A child holds the same gun in a horizontal position while sliding down a 28.8 degrees ...

*September 4, 2010*

**trig**

Given that tan 45=1, use tan(x+y) to show that tan 22.5= /2 - 1. (/is square root sign

*August 24, 2010*

**world history**

the Khmer Rouge is a communist force associated with the country of

*August 16, 2010*

**microeconomics**

Suppose that in 2008, you became president of a small nonprofit theater company. Your playhouse has 120 seats and a small stage. The actors have national reputations, and demand for tickets is enormous relative to the number of seats available; every performance is sold out ...

*August 15, 2010*

**microeconomics**

For each of the following scenarios, decide whether you agree or disagree and explain your answer. a. If the elasticity of demand for cocaine is −.2 and the Drug Enforcement Administration succeeds in reducing supply substantially, causing the street price of the drug ...

*August 14, 2010*

**economics**

If the demand for a good has unitary elasticity, or elasticity is −1, it is always true that an increase in its price will lead to more revenues for sellers taken as a whole.

*August 14, 2010*